A Kingsport Man Has Been Ordered To Spend Time Behind Bars After He Admitted To Killing His Live-In Girlfriend. Mark Breeding Pleaded Guilty To Second Degree Murder In The Death Of Beverly Hartsock In 2012. Kingsport Police Said She Was Stabbed Twice At An Apartment Complex On Bloomingdale Pike. Breeding Was Sentenced To 25 Years In Prison For The Crime.